This page provides detailed information about the amplifier (AMP) and speaker (SP) of the low impedance (Lo-Z) system.
AMP and SP are matched based on their respective "W" values (This "W" is the rated output value for AMP and the rated input value for SP.), but which one should be larger depends on the explanatory material. Some write that AMP should be larger, while others say that SP should be larger. The basic explanation on this site states that both should be made as equal as possible.
The reason for these different explanations is that they each have different aims and concerns.
The aims and concerns for each condition are listed below.
The aims and concerns for each condition are listed below.
Case: AMP < SP
This instruction is given because there is a concern that the SP may be destroyed by a large AMP. The person giving the instructions thought that a small AMP would not destroy the SP.
If the instructor is giving instructions to someone who has little experience or knowledge of signals, it may be a safe instruction.
However, there are some concerns.
One is that in this case, it is not possible to make a loud sound that takes advantage of the SP's abilities.
A secondary problem is that to solve the lack of volume, the input of a mixer etc. will raise the signal level too much, causing signal clipping, producing a very dirty sound and shortening the life of the SP.
Also, under these conditions, it will not be possible to output the natural peaks of the signal.
If the instructor is giving instructions to someone who has little experience or knowledge of signals, it may be a safe instruction.
However, there are some concerns.
One is that in this case, it is not possible to make a loud sound that takes advantage of the SP's abilities.
A secondary problem is that to solve the lack of volume, the input of a mixer etc. will raise the signal level too much, causing signal clipping, producing a very dirty sound and shortening the life of the SP.
Also, under these conditions, it will not be possible to output the natural peaks of the signal.
Case: AMP > SP
If this is selected, the purpose is to make full use of SP's ability. If you need a loud sound and want to ensure that even the peaks in the signal are output naturally, the case should be your choice.
However, the signal level must be appropriately controlled using a processor, etc. In other words, knowledge, adjustment techniques, and operational ability are required to avoid destroying SP.
However, the signal level must be appropriately controlled using a processor, etc. In other words, knowledge, adjustment techniques, and operational ability are required to avoid destroying SP.
Case: AMP = SP
If a detailed explanation is not allowed, it may be appropriate to state this condition.
Ultimately, these conditions should be chosen depending on user's purpose and what designer want to avoid, and it is difficult to provide general and simple conditions.
